diff --git a/arch/mips/au1000/common/irq.c b/arch/mips/au1000/common/irq.c
index 112beb7fe001a79e982680721139a2aed153146e..1339a0979f66d61be72c1e65fdce3856ff558149 100644
--- a/arch/mips/au1000/common/irq.c
+++ b/arch/mips/au1000/common/irq.c
@@ -446,7 +446,6 @@ void __init arch_init_irq(void)
 	extern int au1xxx_ic0_nr_irqs;
 
 	cp0_status = read_c0_status();
-	memset(irq_desc, 0, sizeof(irq_desc));
 	set_except_vector(0, au1000_IRQ);
 
 	/* Initialize interrupt controllers to a safe state.
diff --git a/arch/mips/ite-boards/generic/irq.c b/arch/mips/ite-boards/generic/irq.c
index 16014e6ebf50c05f3649ff27e61c231506f80311..e67f96129491009074f28187a7ee72edd9b864c9 100644
--- a/arch/mips/ite-boards/generic/irq.c
+++ b/arch/mips/ite-boards/generic/irq.c
@@ -181,7 +181,6 @@ void __init arch_init_irq(void)
 	int i;
         unsigned long flags;
 
-        memset(irq_desc, 0, sizeof(irq_desc));
         set_except_vector(0, it8172_IRQ);
 
 	/* mask all interrupts */